Comments for Benjamin Halsted

Comment on Erlang Programming Exercise: 3-8-1 (update) by Paul Cowan

Paul Cowan — Fri, 04 Jun 2010 23:42:01 +0000

I am going through the same tests right now.

Here is my parser, it does not do unary minus yet but it does double digits:

http://github.com/dagda1/erlang_sandbox/blob/master/compiler/parser.erl

Comment on Erlang Programming Exercise: 3-4 by Erlang Programming Exercise: 5-1 « Benjamin Halsted

Erlang Programming Exercise: 5-1 « Benjamin Halsted — Fri, 21 May 2010 01:00:28 +0000

[...] through the "Programming Erlang" book by Joe Armstrong I ended up doing an exercise very much like Exercise 3-4, but I made a mistake and implemented it as a server, like this exercise. It's fun to compare my [...]

Comment on Erlang Programming Exercise: 3-4 by Erlang Programming Exercise: 3-7 « Benjamin Halsted

Erlang Programming Exercise: 3-7 « Benjamin Halsted — Tue, 23 Mar 2010 16:58:28 +0000

[...] this exercise we get to rewrite Exercise 3-4 using the lists module. The author asks us how much shorter the newer version is from the first [...]

Comment on Erlang Programming Exercise: 3-6 (quicksort) by halzy

halzy — Sat, 20 Mar 2010 00:20:38 +0000

Andrea, thank you for the link! Section 2.4 is exactly what I was seeing. It also explains the performance similarity between [H]++Acc and [H|Acc]:
“Or it would be more efficient if the the compiler did not automatically rewrite [H]++Acc to [H|Acc].”

If you get a chance, check out the book that the exercises are from:
http://www.erlangprogramming.org/

So far, I like this book better than the other ones. I’ll continue to work through the exercises and post them as my schedule permits.

Cheers,
-Halzy

Comment on Erlang Programming Exercise: 3-6 (quicksort) by andrea

andrea — Fri, 19 Mar 2010 17:28:04 +0000

i’m learning erlang in these days. reading your exercises is helpful. thank you!
for the ++ operator you can read this : http://www.erlang.org/doc/efficiency_guide/myths.html

Comment on Y! Q2/07 Hack Day by Benjamin Halsted

Benjamin Halsted — Mon, 25 Feb 2008 07:35:24 +0000

That is a good idea.
We tried to do that at one point but didn’t have access to the image data. It may be possible now but didn’t make it into our last version.
Cheers,
Ben

Comment on Y! Q2/07 Hack Day by Martin Legris

Martin Legris — Wed, 13 Feb 2008 23:24:33 +0000

Hey guys, you can try using the ’smoothing’ property on the loaded bitmap files (the map tiles), it will make it look much better once they are rotated!